12F629 Trouble

[ardhuru]

This is a fairly common issue with 12FXXX and the JDM combo, specially if you have configured the pic for internal oscillator *and* mclr_off. If you have, the only way to reclaim the chip is to erase it in another (USB or parallel port based) programmer that can independantly control the sequence of switching on the +5 and +12 volts while programming.

There are variants of the JDM people have designed to take care of this problem using a little extra circuitry. I could give you the URL, but I'd honestly advise you to switch over to something more robust.

Regards,

Anand

[mister_e]

While development kit and device programmer are now cheaper than they were before, i hope and i really think all of theses JDM and all other freebies will die.

PICKIT 2 is probably the best to begin. ~40$, and support most popular PICs. Actual supported device list can be found bellow
http://www.microchip.com/stellent/id...cName=en027813

Pretty bad MPLAB support, but nothing is perfect.

40 bucks for and hassle free programmer, it's nothing.

I no longer suggest Picstart, but ICD-2 or any Elnec (BK precision) programmer are really nice, support too.

[skimask]

Pretty bad MPLAB support, but nothing is perfect.

What do you mean by that? I haven't found anything that the PICKit2 and MPLAB, at least nothing worth mentioning...
Got any specifics that I might be missing?

[mister_e]

Yeah... maybe you need to have your eyes open and read carefully the MPLAB supported list link i'd posted, i'll help you a little bit
PICkit 2 MPLAB 7.51 & 7.52 Support

Debugging & Programming

* PIC12F683*
* PIC16F684*, 685*, 687*, 688*, 689*, 690*
* PIC16F883, 884, 886, 887
* PIC16F913, 914, 916, 917, 946

* These devices require an ICD header board to enable debugging with them.

Programming only

* PIC12F508, 509, 510
* PIC12F675
* PIC16F505, 506

now compare it to the PICKIT 2 standalone utility supported list... MPLAB one is nothing... But it allow ICD, while the standalone don't

[skimask]

Yeah... maybe you need to have your eyes open and read carefully the MPLAB supported list link i'd posted, i'll help you a little bit

now compare it to the PICKIT 2 standalone utility supported list... MPLAB one is nothing... But it allow ICD, while the standalone don't

I guess I still don't get it...are you emphasizing the Debugging part of the picture, the programming part, or the combination debugging/programming part?
And I thought we were up to MPLAB 7.60 now...

[mister_e]

Yup, MPLAB 7.60 still don't support ALL devices listed in the PICKIT 2 standalone application.

MPLAB 7.60 supported list

1 Device Support List
1.1 Debugger - Full Support

PIC16F690* PIC16F886

PIC16F883 PIC16F887

PIC16F884 PIC16F917
1.2 Debugger - Beta Support

PIC12F683*



PIC16F684* PIC16F88

PIC16F685* PIC16F913

PIC16F687* PIC16F914

PIC16F688* PIC16F916

PIC16F689* PIC16F946

PIC16F87
1.3 Programmer - Full Support

PIC12F510

PIC12F675



PIC16F506 PIC16F883

PIC16F684 PIC16F884

PIC16F690 PIC16F886

PIC16F87 PIC16F887

PIC16F88 PIC16F917
1.4 Programmer - Beta Support

PIC12F508

PIC12F509

PIC12F683



PIC16F505 PIC16F913

PIC16F685 PIC16F914

PIC16F687 PIC16F916

PIC16F688 PIC16F946

PIC16F689

FAR FAR away of the standalone... right?

No complaint at all, i don't use MPLAB often.. even PICKIT 2 is my spare and on-the road programmer. BK Precision 844A is my favourite one... PIC, AVR, Texas, Zilog... list is long

[skimask]

Yup, MPLAB 7.60 still don't support ALL devices listed in the PICKIT 2 standalone application.
MPLAB 7.60 supported list
FAR FAR away of the standalone... right?
No complaint at all, i don't use MPLAB often.. even PICKIT 2 is my spare and on-the road programmer. BK Precision 844A is my favourite one... PIC, AVR, Texas, Zilog... list is long

Ok, I think I get what you're saying now...
I have yet to use the PICKIT2 'as part of' MPLAB, I've always used the standalone app totally seperate.